Hg^(2+)荧光传感器的设计及合成(英文)

Design and synthesis of a new fluorescent Hg^(2+) sensor

设计合成了一种新颖的基于萘荧光基团的Hg2+荧光传感器.通过荧光光谱滴定实验研究了其对Hg2+、Li+、Na+、K+、Zn2+、Co2+、Ni 2+、Cu2+、Fe2+、Mn2+、Cr3+和Fe3+等金属离子的选择性识别能力.结果表明,该传感器在生理pH=7.4的H2O-DMSO中对Hg2+表现出较高的选择性,并且形成1∶1的配合物;主客体相互作用荧光猝灭的络合常数为(9.07±0.41)×104.

A novel naphthalene-based fluorescent Hg2＋ sensor was designed and synthesized . The selective recongnition ability of as-synthesized Hg2＋ sensor towards Hg2＋ ,Li＋ ,Na＋ , K＋ ,Zn2＋ ,Co2＋ ,Ni2＋ ,Cu2＋ ,Fe2＋ ,Mn2＋ ,Cr3＋ and Fe3＋ was evaluated by fluorescent spec-tra titration experiments .Results indicate that as-synthesized Hg2＋ sensor exhibits good selec-tivity towards Hg2＋ over Li＋ ,Na＋ ,K＋ ,Zn2＋ ,Co2＋ ,Ni2＋ ,Cu2＋ ,Fe2＋ ,Mn2＋ ,Cr3＋ and Fe3＋ in H2 O-DMSO with a buffered pH value of 7 .4 .The fluorescent sensor and Hg2＋ form a 1∶1 complex ,thereby leading to fluorescent quenching with a binding constant of （9 .07 ± 0 4.1 ） x 10^4 .